tests: drivers: adc: adc_api: Move compat atmel,sam-adc to DT

/*

 * SPDX-License-Identifier: Apache-2.0

 *

 * Copyright (c) 2023 Benjamin Björnsson <benjamin.bjornsson@gmail.com>

 */

#include <zephyr/dt-bindings/adc/adc.h>

/ {

	zephyr,user {

		io-channels = <&adc0 15>;

	};

};

&adc0 {

	#address-cells = <1>;

	#size-cells = <0>;

	status = "okay";

	channel@f {

		reg = <15>;

		zephyr,gain = "ADC_GAIN_1";

		zephyr,reference = "ADC_REF_EXTERNAL0";

		zephyr,acquisition-time = <ADC_ACQ_TIME_DEFAULT>;

		zephyr,resolution = <12>;

		zephyr,input-positive = <15>;

	};

};

#define ADC_ACQUISITION_TIME	ADC_ACQ_TIME_DEFAULT

#define ADC_1ST_CHANNEL_ID	0

#elif defined(CONFIG_BOARD_SAM4S_XPLAINED)

#define ADC_DEVICE_NODE		DT_INST(0, atmel_sam_adc)

#define ADC_RESOLUTION		12

#define ADC_GAIN		ADC_GAIN_1

#define ADC_REFERENCE		ADC_REF_EXTERNAL0

#define ADC_ACQUISITION_TIME	ADC_ACQ_TIME_DEFAULT

#define ADC_1ST_CHANNEL_ID	15

#define ADC_1ST_CHANNEL_INPUT	15

#elif defined(CONFIG_SOC_FAMILY_SAM0)

#include <soc.h>

#define ADC_DEVICE_NODE         DT_INST(0, atmel_sam0_adc)